What factors affect phenotype?
An organism’s phenotype results from two basic factors: the expression of an organism’s genetic code, or its genotype, and the influence of environmental factors. Both factors may interact, further affecting phenotype.
Which human phenotype is affected by environmental and genetic factors?
Phenotype is the observable physical or biochemical characteristics of an individual organism, determined by both genetic make-up and environmental influences, for example, height, weight and skin colour.
How does your environment influence you?
The environment can influence peoples’ behavior and motivation to act. … The environment can influence mood. For example, the results of several research studies reveal that rooms with bright light, both natural and artificial, can improve health outcomes such as depression, agitation, and sleep.
What is an example of a phenotype?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
What is difference between genotype and phenotype?
A genotype refers to the genetic characteristics of an organism. A phenotype refers to the physical characteristics.
How does the environment affect genetics?
Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
Can environment change genes?
Environmentally induced changes in gene expression occur when exposure to chemicals changes which genes are turned “on” or “off”—which can change how the cells function and thus a person’s predisposition to disease. The effect of this chemical modification is called epigenetic regulation.1 мая 2011 г.
What is it called when two separate genes contribute to one phenotype?
Pleiotropy (from Greek πλείων pleion, “more”, and τρόπος tropos, “way”) occurs when one gene influences two or more seemingly unrelated phenotypic traits. Such a gene that exhibits multiple phenotypic expression is called a pleiotropic gene.
What are some examples of environmental influences?
Environmental influences include dietary intake of B vitamins, especially folate, as well as medical conditions such as renal dysfunction, SLE, advanced age, hypothyroidism and some medications.
How do humans impact the environment in a positive way?
Humans and the environment
Humans affect the environment in positive and negative ways. Cutting down trees and littering have a negative effect on animals and plants. Protecting endangered species and cleaning lakes and seas has a positive effect on the environment.
Does your environment affect your success?
Sure you can improve your results through hard and smart work, but that’s just one factor in the formula of success. There are others factors such as environment and identity. Creating the right environment will increase your productivity, effectiveness, and even your motivation. It will result in improved results.
What is a normal phenotype?
A homozygous dominant (AA) individual has a normal phenotype and no risk of abnormal offspring. A homozygous recessive individual has an abnormal phenotype and is guaranteed to pass the abnormal gene onto offspring.
Are blue eyes a phenotype?
Because blue is recessive and brown is dominant, any blue-brown heterozygote will almost definitely have a brown-eye phenotype, and the person’s eyes will be brown. … Similarly, the children who inherit two blue alleles, i.e., a blue-blue genotype, will have a blue-eye phenotype and have blue eyes.